Alert archive / North Dakota / Tornado Warnings in 2011
Tornado Warning 55, NWS Bismarck, ND
NWS Bismarck, ND issued this tornado warning at Jul 17, 2011, 10:25 AM CDT for 4 counties in North Dakota. It was in force for 35 min. 6 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 17, 2011, 10:25 AM CDT (15:25 UTC)
- Expired
- Jul 17, 2011, 11:00 AM CDT
- In force
- 35 min
- Issued by
- NWS Bismarck, ND
- Area
- Storm-based polygon
Counties McHenry County, ND, McLean County, ND, Sheridan County, ND, Ward County, ND
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 17, 10:25 AM CDT | HAIL 2.5 | 5 S Sawyer, ND | REPORT RELAYED BY MEDIA. |
| Jul 17, 10:38 AM CDT | HAIL 2.75 | 2 S Velva, ND | REPORT RELAYED BY THE MEDIA. |
| Jul 17, 10:40 AM CDT | HAIL 1.75 | Voltaire, ND | REPORT RELAYED BY THE MEDIA. |
| Jul 17, 10:50 AM CDT | HAIL 1.75 | Bergen, ND | REPORT RELAYED BY THE MEDIA. |
| Jul 17, 10:56 AM CDT | HAIL 2.75 | Balfour, ND | ALSO REPORTS HEAVY RAIN. LARGE HAIL ENDED AT 1110 AM CDT. ESTIMATED WINDS AT 50-60 MPH WITH NO VISIBLE DAMAGE FROM HIS HOME. |
| Jul 17, 11:06 AM CDT | HAIL 2.75 | Balfour, ND | REPORT RELAYED BY THE MEDIA. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 17, 9:58 AM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 12:00Z, 3.4 hours before the alert went out and 131 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 4227 J/kg
- Mixed-layer CIN
- -184 J/kg
- Mixed-layer LCL
- 1037 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 156 m²/s²
- 0-3 km storm-relative helicity
- 276 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 37.4
The text
As transmitted, in the capitals the NWS used until 2016.
697 WFUS53 KBIS 171525 TORBIS NDC049-055-083-101-171600- /O.NEW.KBIS.TO.W.0055.110717T1525Z-110717T1600Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE BISMARCK ND 1025 AM CDT SUN JUL 17 2011 THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A * TORNADO WARNING FOR... SOUTHERN MCHENRY COUNTY IN NORTH CENTRAL NORTH DAKOTA... NORTHEASTERN MCLEAN COUNTY IN SOUTH CENTRAL NORTH DAKOTA... NORTHWESTERN SHERIDAN COUNTY IN SOUTH CENTRAL NORTH DAKOTA... SOUTHEASTERN WARD COUNTY IN NORTH CENTRAL NORTH DAKOTA... * UNTIL 1100 AM CDT * AT 1020 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED 8 MILES NORTH OF BENEDICT...OR 23 MILES SOUTHEAST OF MINOT...AND MOVING EAST AT 35 MPH. * LOCATIONS IMPACTED INCLUDE... RUSO...VOLTAIRE...BERGEN...BUTTE...BALFOUR AND KIEF. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS. REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE IN BISMARCK AT 701-223-4582. && LAT...LON 4803 10042 4778 10047 4786 10115 4804 10112 TIME...MOT...LOC 1525Z 277DEG 31KT 4794 10099 $$ MERRIMAN
1 follow-up statement
155 WWUS53 KBIS 171542 SVSBIS SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE BISMARCK ND 1042 AM CDT SUN JUL 17 2011 NDC101-171551- /O.CAN.KBIS.TO.W.0055.000000T0000Z-110717T1600Z/ WARD ND- 1042 AM CDT SUN JUL 17 2011 ...THE TORNADO WARNING FOR SOUTHEASTERN WARD COUNTY IS CANCELLED... THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED AREA. REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE IN BISMARCK AT 701-223-4582. LAT...LON 4803 10096 4803 10042 4778 10047 4784 10096 TIME...MOT...LOC 1541Z 277DEG 31KT 4792 10079 $$ NDC049-055-083-171600- /O.CON.KBIS.TO.W.0055.000000T0000Z-110717T1600Z/ MCHENRY ND-MCLEAN ND-SHERIDAN ND- 1042 AM CDT SUN JUL 17 2011 ...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHWESTERN SHERIDAN... NORTHEASTERN MCLEAN AND SOUTH CENTRAL MCHENRY COUNTIES UNTIL 1100 AM CDT... AT 1038 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED 7 MILES SOUTH OF VOLTAIRE...OR 31 MILES SOUTHEAST OF MINOT...MOVING EAST AT 35 MPH. LOCATIONS IMPACTED INCLUDE... BERGEN...BUTTE...BALFOUR AND KIEF. DESTRUCTIVE BASEBALL SIZE HAIL IS ALSO OCCURRING WITH THIS STORM. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS. REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE IN BISMARCK AT 701-223-4582. && LAT...LON 4803 10096 4803 10042 4778 10047 4784 10096 TIME...MOT...LOC 1541Z 277DEG 31KT 4792 10079 $$ MERRIMAN/AYD
The office that day
Everything else NWS Bismarck, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 16, 7:20 PM CDT | Flash Flood Warning | BIS | Foster, Wells | 6 hr |
| Jul 16, 7:25 PM CDT | Severe Thunderstorm Warning | BIS | Burleigh, Emmons | 65 min |
| Jul 16, 7:36 PM CDT | Tornado Warning | BIS | Wells | 24 min |
| Jul 16, 8:00 PM CDT | Tornado Warning | BIS | Wells | 45 min |
| Jul 16, 8:13 PM CDT | Tornado Warning | BIS | Emmons | 32 min |
| Jul 16, 8:44 PM CDT | Tornado Warning | BIS | Wells | 46 min |
| Jul 16, 8:59 PM CDT | Tornado Warning | BIS | Kidder | 31 min |
| Jul 16, 9:30 PM CDT | Tornado Warning | BIS | Kidder, Stutsman, Wells | 45 min |
| Jul 16, 9:38 PM CDT | Flash Flood Warning | BIS | Foster, Stutsman | 4 hr |
| Jul 16, 9:44 PM CDT | Tornado Warning | BIS | Emmons | 31 min |
| Jul 17, 1:31 AM CDT | Areal Flood Warning | BIS | Foster, Stutsman, Wells | 18 hr |
| Jul 17, 9:40 AM CDT | Severe Thunderstorm Warning | BIS | Ward | 50 min |
| Jul 17, 9:54 AM CDT | Tornado Warning | BIS | Ward | 36 min |
| Jul 17, 10:13 AM CDT | Severe Thunderstorm Warning | BIS | McHenry, Ward | 47 min |
| Jul 17, 10:57 AM CDT | Tornado Warning | BIS | McHenry, McLean, Pierce, Sheridan | 33 min |
| Jul 17, 11:26 AM CDT | Tornado Warning | BIS | McHenry, Pierce, Sheridan, Wells | 49 min |
| Jul 17, 11:29 AM CDT | River Flood Warning | BIS | Ward | 9 days |
| Jul 17, 12:13 PM CDT | Tornado Warning | BIS | Wells | 32 min |
| Jul 17, 12:44 PM CDT | Severe Thunderstorm Warning | BIS | Wells | 16 min |
| Jul 17, 1:11 PM CDT | Tornado Warning | BIS | Foster | 64 min |
| Jul 17, 2:11 PM CDT | Tornado Warning | BIS | Foster, Stutsman | 49 min |
| Jul 17, 2:33 PM CDT | Flash Flood Warning | BIS | Foster | 6 hr |
| Jul 17, 3:31 PM CDT | Tornado Warning | BIS | Kidder, Stutsman | 29 min |
| Jul 17, 3:58 PM CDT | Tornado Warning | BIS | Kidder, Stutsman | 32 min |
| Jul 17, 4:29 PM CDT | Tornado Warning | BIS | Stutsman | 46 min |
| Jul 17, 4:44 PM CDT | Flash Flood Warning | BIS | Stutsman | 3 hr |
| Jul 17, 5:13 PM CDT | Tornado Warning | BIS | LaMoure, Stutsman | 47 min |
| Jul 17, 6:02 PM CDT | Tornado Warning | BIS | LaMoure | 43 min |
| Jul 17, 6:28 PM CDT | Tornado Warning | BIS | Dickey | 62 min |
| Jul 17, 6:45 PM CDT | Tornado Warning | BIS | LaMoure | 30 min |
Nearby
Tornado Warnings in North Dakota, 2011Every tornado warning in 2011Tornadoes in 2011
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.